数学七年级 有理数的混合运算36乘(1/2-1/3)2乘方= 12.7除(-8/19)乘0= 4乘(-3)2乘方+6=(-3/4)乘(-8+2/3-1/3)= (-2)3乘方-13除(-1/2)= 0-2 3乘方除(-4)3乘方-1/8= (-2)3乘方乘0.5-(-1
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![数学七年级 有理数的混合运算36乘(1/2-1/3)2乘方= 12.7除(-8/19)乘0= 4乘(-3)2乘方+6=(-3/4)乘(-8+2/3-1/3)= (-2)3乘方-13除(-1/2)= 0-2 3乘方除(-4)3乘方-1/8= (-2)3乘方乘0.5-(-1](/uploads/image/z/243233-17-3.jpg?t=%E6%95%B0%E5%AD%A6%E4%B8%83%E5%B9%B4%E7%BA%A7+%E6%9C%89%E7%90%86%E6%95%B0%E7%9A%84%E6%B7%B7%E5%90%88%E8%BF%90%E7%AE%9736%E4%B9%98%EF%BC%881%2F2-1%2F3%292%E4%B9%98%E6%96%B9%3D++++++++12.7%E9%99%A4%EF%BC%88-8%2F19%EF%BC%89%E4%B9%980%3D+++++4%E4%B9%98%EF%BC%88-3%EF%BC%892%E4%B9%98%E6%96%B9%2B6%3D%EF%BC%88-3%2F4%29%E4%B9%98%EF%BC%88-8%2B2%2F3-1%2F3%29%3D+++++%EF%BC%88-2%EF%BC%893%E4%B9%98%E6%96%B9-13%E9%99%A4%EF%BC%88-1%2F2%29%3D+++++0-2+3%E4%B9%98%E6%96%B9%E9%99%A4%EF%BC%88-4%EF%BC%893%E4%B9%98%E6%96%B9-1%2F8%3D+%EF%BC%88-2%EF%BC%893%E4%B9%98%E6%96%B9%E4%B9%980.5-%EF%BC%88-1)
数学七年级 有理数的混合运算36乘(1/2-1/3)2乘方= 12.7除(-8/19)乘0= 4乘(-3)2乘方+6=(-3/4)乘(-8+2/3-1/3)= (-2)3乘方-13除(-1/2)= 0-2 3乘方除(-4)3乘方-1/8= (-2)3乘方乘0.5-(-1
数学七年级 有理数的混合运算
36乘(1/2-1/3)2乘方= 12.7除(-8/19)乘0= 4乘(-3)2乘方+6=
(-3/4)乘(-8+2/3-1/3)= (-2)3乘方-13除(-1/2)= 0-2 3乘方除(-4)3乘方-1/8=
(-2)3乘方乘0.5-(-1.6)2乘方除(-2)2乘方=
-3/2乘【(-2/3)2乘方-2】= 【(-3)2乘方-(-5)2乘方】除(-2)=
16除(-2)3乘方-(-1/8)乘(-4)= 要过程.
数学七年级 有理数的混合运算36乘(1/2-1/3)2乘方= 12.7除(-8/19)乘0= 4乘(-3)2乘方+6=(-3/4)乘(-8+2/3-1/3)= (-2)3乘方-13除(-1/2)= 0-2 3乘方除(-4)3乘方-1/8= (-2)3乘方乘0.5-(-1
原式我用?代替
22-1.2+|-22|
=22-1.2+22
=42.8
|-1.2|+|3.3|-|-1.3|
=1.2+3.3-1.3
=3.2
-5+7+2-4
=-5-4+7+2
=-9+9
=0
-4.8+5.2-7.8+5
=-4.8-7.8+5.2+5
=-12.6+10.2
=-2.4
-1/8+3/4-1/2-1/4
=3/4-1/4-1/2-1/8
=1/2-1/2-1/8
=0-1/8
=-1/8
1,0,150,6*1/4,18,-1/16,-6.64,7/3,8,3/2
先乘除后加减,有括号的先算括号里面的.能简便计算的适时选用简便计算.把握这个原则了,自己去算.
1/12,0,42,